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2011

Learning Node.js

·3186 words·15 mins
For projects and for some experiments I want to get a better way to do server push. With the new HTML 5 becoming the standard and therefore WebSockets becoming available in all mayor browsers, it seems that WebSockets is the way forward. A very nice implementation of WebSockets that is backwards compatible with older browsers […]

Using Spring social to connect your online profiles

·1077 words·6 mins
Some time a go I wrote an item on my personal blog about a sample that I created with the spring social project. I explained how to connect to linkedin. In this blog post I want to go one step further. I want to create an application that a user need to log in to. […]

Using the Spring RESTTemplate with Jackson

·1770 words·9 mins
About a week a go I wrote a blog post on gridshore about the NOS open data API. Most of the technical items are explained in that post. In this post I want to tell you about the small library I have created around the NOS open data REST based API. With this client it […]

Deploying a CQRS application based on the Axon framework on Google App Engine

·2239 words·11 mins
The Axon framework is a CQRS framework created by Allard Buijze. From the beginning I am trying to help him out, mostly by creating samples. This blog post is about a sample I am creating for Google App Engine. Everybody that has been working with Google App Engine (GAE) knows that it enforces some limitations […]

2010

Monitoring Hippo Connection pool using JMX and Groovy

·1441 words·7 mins
For a project we are using Hippo to manage our content. We have a few components that interact with the repository using the connection pool as provided by hippo. I have modified the connection pool to increase the amount of logs and I have added statistics to the pool which can be exposed using JMX. […]

Logging to the syslog from a java application

·865 words·5 mins
Every application needs logging, it can help you during development and when debugging those annoying things that do not work in production. One question is where to put the logging events. All linux servers use a system log to log events that take place on the operating system level. You can find logs for the kernel, […]

2009

Using ehcache monitor

·921 words·5 mins
In my previous blog post serving a heavy load rss feed with spring 3 and ehcache I showed a solution for rss and caching using ehcache. After posting, Alex Miller commented about using a new product from ehcache called ehcache monitor. As curious as I am I decided to have a look. In this blog […]

Serving a heavy load rss feed with Spring 3 and EHCache

·1246 words·6 mins
For a project I am doing there was a feature request to come up with an rss component for their new website. This seems pretty easy but the amount of possible feeds (100.000) and the potential for very high load made us think about a custom made solution based on ehcache, spring 3 and rome. […]

Using GIT coming from subversion

·1775 words·9 mins
A while a go I upgraded to subversion 1.6. That was the moment I started to have more and more problems with subversion. The past years I was a strong advocate of subversion, but now I am having a hard time defending the usage of subversion. I got interested in GIT. About a month a […]

Second meetup DDDNL usergroup

·106 words·1 min
Is has been more than a month a go that we had our first meeting, it is shorter than a month before we have the second event. The next event will take place on the 27th of october. The second event will be held at JTeam office in Amsterdam. The program for the event will […]